According to the Sleep Foundation, the average night 's sleep is 6 8 hours (Fortune, March 20, 2006) Assume the standard deviation is 6 hours and that the probability distribution is normal a What is the probability that a randomly selected person sleeps more than 8 hours b What is the probability ...

68 6 a At x 8 P x 8 P z 20 1 9772 0228 b At x 6 P x 6 ...

According to the Sleep Foundation, the average night's sleep is 6.8 hours (Fortune, March 20, 2006). Assume

Question:

According to the Sleep Foundation, the average night's sleep is 6.8 hours (Fortune, March 20, 2006). Assume the standard deviation is .6 hours and that the probability is normal.
a. What is the probability that a randomly selected person sleeps more than 8 hours?
b. What is the probability that a randomly selected person sleeps 6 hours or less?
c. Doctors suggest getting between 7 and 9 hours of sleep each night. What percentage of the population gets this much sleep? Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...